CN214780358U - Parallel four-main-cable cross-cable crane - Google Patents
Parallel four-main-cable cross-cable crane Download PDFInfo
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- CN214780358U CN214780358U CN202120594825.6U CN202120594825U CN214780358U CN 214780358 U CN214780358 U CN 214780358U CN 202120594825 U CN202120594825 U CN 202120594825U CN 214780358 U CN214780358 U CN 214780358U
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Abstract
The utility model relates to a cable loop wheel machine is striden to four parallel main push-towing ropes, this cable loop wheel machine is striden to four parallel main push-towing ropes, support and traveling system, hoist and mount system, main truss (8) and control system on the cable, the cable on support and traveling system and hoist and mount system and be two, support and traveling system respectively through hoist and mount system parallel arrangement at main truss (8) both ends on two cables. The utility model provides a pair of parallel four main push-towing ropes cable crane is used for the main push-towing ropes bridge that the main push-towing ropes form is parallel four main push-towing ropes, unilateral and two main push-towing ropes, and the main push-towing ropes atress is balanced, and the overall structure dead weight is lighter, and stability is good, and the controllability is high, and self-adaptability is strong, has reduced the hoist and mount operation degree of difficulty of super large span suspension bridge.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering, concretely relates to parallel four main push-towing ropes cable crane strides.
Background
The suspension bridge type has strong spanning capability due to the structural characteristics of the suspension bridge type, and is widely applied to the infrastructure traffic construction. At present, the construction of a plurality of domestic suspension bridges over 2000m is on schedule, and the technical research and exploration of a main span 3000m suspension bridge is carried out at home and abroad. For a main span suspension bridge with the height of more than 2000m, if a conventional two-main-cable mode is adopted, the diameter of the main cable is very large, and the construction difficulty is high. Therefore, the main cable can be set into a form of four parallel main cables and a single-side juxtaposed double main cable, so that the stress performance of the main cable can be improved, and the construction difficulty of the main cable can be reduced.
The cross-cable crane is used as large-scale special equipment for hoisting the stiffening beam of the suspension bridge, and has obvious advantages when the aircraft is provided with overwater hoisting operation conditions. At present, the existing cable-crossing crane is mainly in a double-main-cable form, and the mode that the existing cable-crossing crane adopts single-side single main cables to bear and walk is not suitable for the hoisting requirement of a four-main-cable suspension bridge. Therefore, there is a need for a novel cable-crossing crane which is suitable for a suspension bridge with main cables in the form of parallel four main cables and a single-side juxtaposed double main cable.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of parallel four main push-towing rope strides cable loop wheel machine and application method thereof, the purpose is overcome and is adopted among the prior art that the unilateral single main push-towing rope of unilateral bears and the two main push-towing rope strides cable loop wheel machines of walking to be not suitable for the problem that four main push-towing rope suspension bridge hoisted the requirement.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a cable loop wheel machine is striden to four parallel main push-towing ropes, includes support and traveling system, hoist and mount system, main truss and control system on the cable, the cable on support and traveling system and hoist and mount system be two, support and traveling system respectively through hoist and mount system parallel arrangement at the main truss both ends on two cables.
Furthermore, the on-cable supporting and traveling system comprises two groups of traveling mechanisms, a traction mechanism, a connecting shaft box body and a parallel connection structure, wherein the two groups of traveling mechanisms are arranged in parallel and fixedly connected with each other through the parallel connection structure, and the upper ends of the two groups of traveling mechanisms are hinged with the connecting shaft box body through a transverse pin shaft; the traction mechanism is arranged on the parallel connection structure.
Furthermore, the traction mechanism comprises a traction steel strand jack, one end of the traction steel strand jack is fixed on the parallel connection structure, and the other end of the traction steel strand jack is connected with a walking reaction frame arranged on the two main cables through a walking fixing anchor to provide reaction support during walking.
Furthermore, the travelling mechanism consists of a travelling mechanism box body, four travelling wheel groups and three hoop bodies; the four travelling wheel groups are longitudinally arranged in the travelling mechanism box body; the three hoop bodies are longitudinally arranged at the bottom of the box body of the travelling mechanism, and each hoop body is correspondingly arranged between two adjacent four travelling wheel groups.
Furthermore, each walking wheel set consists of a walking roller and a load transfer oil cylinder; four walking rollers all are located the running gear box, and every walking roller all is connected with a load transfer hydro-cylinder through the round pin axle, and load transfer hydro-cylinder fixed connection is in running gear box top.
Furthermore, the load transfer oil cylinder is connected with the running mechanism box body through a flange.
Furthermore, the hoisting system comprises a bearing structure, two sets of main jack hoisting systems and an carrying pole beam; the bearing structure is of a pi-shaped box body structure and is hinged with the connecting shaft box body through a longitudinal pin shaft; the two sets of main jack lifting systems are symmetrically arranged on the bearing structure, and each main jack lifting system comprises a main lifting jack, a steel strand wire rewinding device and a steel strand wire guide frame which are matched with the main lifting jack; the main lifting jack is fixed on the bearing structure, the steel strand wire rewinding device is positioned on the inner side of the main lifting jack, the steel strand guide frame is arranged above the steel strand wire rewinding device, and the steel strands in the steel strand wire rewinding device extend out of the lower portion of the main lifting jack through the steel strand guide frame; and the steel strands of the two main jack lifting systems respectively penetrate through the two end parts of the bearing structure to be connected with the two ends of the carrying pole beam.
Furthermore, the main truss is a rectangular structure formed by combining a plurality of sections of truss sections, the truss sections are connected through pin shafts, the ends of the truss are connected with the bearing structures at the ends through flanges, and the truss sections are connected through bolts.
The utility model provides a pair of parallel four main push-towing ropes cable crane strides has following advantage:
(1) the two groups of single-side travelling mechanisms are connected through a flat coupling mechanism and are hinged with the connecting shaft box body through a transverse pin shaft, the end bearing structure is hinged with the connecting shaft box body through the pin shaft, the rotation restraint of the whole machine in the longitudinal and transverse bridge directions can be released, the stability of the whole machine is good, and the self-adaptive capacity is strong;
(2) the two main lifting jacks on one side are symmetrically arranged on two sides of the end part bearing structure, and the stress of the main cable is balanced;
(3) the main truss only bears the dead weight of the main truss and the weights of a hydraulic pump station, a control chamber and the like, the structural stress is small, and the dead weight of the whole machine is reduced by adopting a lightweight design;
(4) the main truss is formed by combining a plurality of sections of truss sections, and the number of the sections can be properly adjusted or partial sections can be transformed to adapt to suspension bridges with different main cable intervals;
(5) the single-side double-main-cable bearing structure of the cross-cable crane is good in stability in hoisting and walking states.
The utility model has the advantages that: the utility model provides a pair of parallel four main push-towing ropes cable crane is used for the main push-towing ropes bridge that the main push-towing ropes form is parallel four main push-towing ropes, unilateral and two main push-towing ropes, and the main push-towing ropes atress is balanced, and the overall structure dead weight is lighter, and stability is good, and the controllability is high, and self-adaptability is strong, has reduced the hoist and mount operation degree of difficulty of super large span suspension bridge.
Drawings
FIG. 1 is a front view of a parallel four-main-cable span-cable crane of the present invention;
FIG. 2 is a top view of the parallel four main cable span cable crane of the present invention;
FIG. 3 is a front view of the on-cable support and travel system of the present invention;
fig. 4 is a side view of the on-cable support and travel system of the present invention.
Description of reference numerals: 1. a steel strand guide frame; 2. a steel strand wire winder; 3. a main lifting jack; 4. a load bearing structure; 5. steel strand wires; 6. a main cable; 7. a shoulder pole beam; 8. a main truss; 9. a hydraulic pump station; 10. a control room; 11. connecting the shaft box body; 12. a load transfer cylinder; 13. a traveling mechanism box body; 14. a walking roller; 15. the hoop body; 16. a parallel connection structure; 17. a traction steel strand jack; 18. a cable clamp; 19. a transverse pin shaft; 20. a pin shaft; 21. a longitudinal pin shaft; 22. walking and fixing the anchor; 23. a walking reaction frame.
Detailed Description
Example 1
As shown in fig. 1-4, the utility model provides a cable loop wheel machine is striden to four parallel main push-towing ropes, support and traveling system, hoist and mount system, main truss 8 and control system on the cable, the cable on support and traveling system and hoist and mount system be two, support and traveling system respectively through hoist and mount system parallel arrangement at 8 both ends of main truss on two cables.
Further, the on-cable supporting and traveling system comprises two groups of traveling mechanisms, a traction mechanism, a connecting shaft box body 11 and a parallel connection structure 16, wherein the two groups of traveling mechanisms are arranged in parallel and fixedly connected with each other through the parallel connection structure 16, and the upper ends of the two groups of traveling mechanisms are hinged with the connecting shaft box body 11 through a transverse pin shaft 19; the traction mechanism is arranged on the flat coupling mechanism 16.
Furthermore, the traction mechanism comprises a traction steel strand jack 17, one end of the traction steel strand jack 17 is fixed on the flat coupling mechanism 16, and the other end of the traction steel strand jack 17 is connected with a walking reaction frame 23 arranged on the two main cables through a walking fixing anchor 22 to provide reaction support during walking. The walking reaction frame is generally arranged at 4-5 cable clamps away from the hoisting position, and the cable clamps are tightly pushed during installation.
Furthermore, the travelling mechanism consists of a travelling mechanism box body 13, four travelling wheel groups and three hoop bodies 15; the four travelling wheel groups are longitudinally arranged in the travelling mechanism box body 13; the three anchor ear bodies 15 are longitudinally arranged at the bottom of the travelling mechanism box body 13 and are connected by bolts, and the positions of the anchor ears can be adjusted according to actual conditions so as to meet the requirement of accurate positioning of the cable crane under the condition of cable clamps 18 with different lengths. Each located between two adjacent four running wheel sets.
Furthermore, each walking wheel set consists of a walking roller 14 and a load transfer oil cylinder 12; four walking rollers 14 are all located in the walking mechanism box 13, each walking roller 14 is connected with one load transfer oil cylinder 12 through a pin shaft 20, and the load transfer oil cylinders 12 are fixedly connected above the walking mechanism box 13.
Further, the load transfer cylinder 12 is connected with the traveling mechanism box 13 by a flange.
The utility model discloses when cable loop wheel machine walking is striden to four parallel main push-towing ropes, staple bolt body 15 is opened, and walking gyro wheel 14 rises and falls in turn and realizes strideing across the function of cable clamp 18. The two sets of running gears on the single side are connected through a parallel connection structure 16, and meanwhile, the two sets of running gears on the single side are hinged with the connecting shaft box body 11 through a transverse pin shaft 19, so that the rotation restraint of the connecting shaft box body 11 along the direction of the main cable 6 can be released, and the end bearing structure 4 and the main truss 8 are ensured to be located on a vertical plane all the time. The transverse pin shaft 19 is connected with the connecting shaft box body 11 through flange end faces, and the transverse pin shaft 19 is inserted into the connecting shaft box body 11 for a certain length, so that the connecting shaft box body 11 and the pin shaft 19 jointly bear bending moment. The traction steel strand jacks 17 are arranged at the center positions of the two main cables on the single side, and the walking synchronism of the crane is easier to control under the condition of multiple supporting points.
Further, the hoisting system comprises a bearing structure 4, two sets of main jack lifting systems and a shoulder pole beam 7; the bearing structure 4 is a phi-shaped box body structure, is hinged with the connecting shaft box body 11 through the longitudinal pin shaft 21, and can release the rotation restriction of the bearing structure in the transverse bridge direction, so that the adverse effect of the erection error of the double main cables arranged at one side on the main bearing structure of the crane is eliminated, and the additional bending moment generated by the main truss 8 of the crane is reduced to the maximum extent. The outer side of the longitudinal pin shaft 21 is fixed by a double-round nut, so that a large axial force can be borne. Two sets of main jack lifting systems are symmetrically arranged on the bearing structure 4, and each main jack lifting system comprises a main lifting jack 3, a steel strand wire rewinding device 2 and a steel strand wire guide frame 1 which are matched with the main lifting jack; the main lifting jack 3 is fixed on the bearing structure 4, the steel strand wire rewinding device 2 is positioned on the inner side of the main lifting jack 3, the steel strand guide frame 1 is arranged above the steel strand wire rewinding device 2, and the steel strands 5 in the steel strand wire rewinding device 2 extend out of the lower side of the main lifting jack 3 through the steel strand guide frame 1; the steel strands 5 of the two main jack lifting systems respectively penetrate through two end parts of the bearing structure 4 to be connected with two ends of the carrying pole beam 7. The shoulder pole beam 7 is connected with the stiffening beam. The bearing structure 4 at the end part directly bears the load of the main lifting jack 3 and is a main stressed member of the crane.
Furthermore, the main truss 8 is a rectangular structure formed by combining a plurality of sections of truss sections, the truss sections are connected by pin shafts, the ends of the truss sections are connected with the bearing structure 4 at the end part by flanges, and the main truss 8 is connected by bolts among the sections of members. The truss segment is composed of H-shaped steel, angle steel, channel steel and the like.
Furthermore, the control system consists of two hydraulic pump stations 9 and a control room 10; the two on-cable supporting and traveling systems, the two hoisting systems and the two hydraulic pump stations 9 are symmetrically arranged on the main truss 8 by taking the control room 10 as a center; the main truss 8 only bears the dead weight of the main truss and the weights of the hydraulic pump station 9, the control chamber 10 and the like, the structural stress is small, the light weight design can be adopted, and the weight of the whole machine is reduced. The main truss 8 can also be used as a communication channel between the upstream main cable and the downstream main cable, and provides part of transverse connection rigidity when the crane walks.
Further, the two hydraulic pump stations 9 are respectively connected with a load transfer cylinder 12 of the on-cable supporting and traveling system at one end thereof, a traction steel strand jack 17 and a main lifting jack 3 of the hoisting system; the hydraulic pump station 9 is provided with a generator to provide power for the components. Preferably, hydraulic control one-way valves and balance valves are arranged on hydraulic loops of the traction steel strand jacks 17, the main lifting jacks 3 and the hydraulic pump station, and oil paths can be locked when emergencies occur, so that the lifting safety of the stiffening beam is ensured.
Further, control room 10 in set up one set of central control system, link to each other through data line and hydraulic power unit 9, mainly used the utility model discloses walking on the crane cable and taking one's place, stiffening beam hoist and mount the overall process control such as, the operating condition and the operation process of all jacks, driving system, steel strand wires spooler on the cable crane are striden in the simultaneous monitoring, belong to prior art, do not just do the detailed description here. Preferably, one set of central control system can control all the actuating mechanisms of 2 cranes on line, and can be conveniently used for double-crane lifting operation with larger tonnage.
Example 2
On the basis of embodiment 1, the utility model relates to a parallel four main push-towing rope strides cable loop wheel machine's application method, concrete step is:
the method comprises the following steps: installing an on-cable supporting and traveling system, a hoisting system and a main truss 8 at a preset position of a formed main cable, starting a load transfer oil cylinder of a traveling mechanism, moving a traveling roller upwards to an anchor ear body of the traveling mechanism to be supported on the top surface of the main cable, fastening the anchor ear body, and continuously contracting a piston of the load transfer oil cylinder to enable the traveling roller to be separated from the main cable;
step two: a main lifting jack of the hoisting system lowers a steel strand and connects a carrying pole beam with a stiffening beam (generally transported by water) right below the crane, the main lifting jack is started to lift the stiffening beam in place, the stiffening beam is connected with a sling to complete the conversion of a stress system, and then the connection between the carrying pole beam and the stiffening beam is released;
step three: starting a load transfer oil cylinder of the travelling mechanism, ejecting a piston of the load transfer oil cylinder, moving a travelling roller downwards and supporting the travelling roller on the top surface of the main cable, opening the anchor ear body, and ejecting the piston continuously to enable a travelling mechanism box body to drive other structures to be separated from the top surface of the main cable;
step four: starting a traction steel strand jack of the traction mechanism to enable the whole cable-crossing crane to move forwards to a preset position; when the walking rollers move to the cable clamp position, the rollers are independently controlled to move upwards to be separated from the main cable, the traction steel strand jack is continuously started to enable the cable-crossing crane to move forwards to the roller crossing cable clamp, the rollers are controlled to move downwards and supported on the top surface of the main cable, and the walking rollers alternately lift up to realize the function of the cable-crossing crane crossing cable clamp;
step five: starting a load transfer oil cylinder of the travelling mechanism, enabling a piston of the load transfer oil cylinder to contract to drive a box body of the travelling mechanism to move downwards and support the box body on the top surface of the main cable, fastening a hoop body of the travelling mechanism, and enabling a piston to continue to contract to enable a travelling roller to be separated from the main cable;
step six: repeating the second step to the fifth step until all stiffening beam sections are hoisted;
step seven: and sequentially detaching the main truss, the hoisting system and the on-cable support and walking system.
The above examples are merely illustrations of the present invention, and do not constitute limitations to the scope of the present invention, and all designs identical or similar to the present invention belong to the scope of the present invention. The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (8)
1. The utility model provides a cable loop wheel machine is striden to four parallel main push-towing ropes, includes support and traveling system, hoist and mount system, main truss (8) and control system on the cable, characterized by: the cable upper support and walking system and the hoisting system are two, and the two cable upper support and walking systems are respectively arranged at two ends of the main truss (8) in parallel through the hoisting system.
2. The parallel four-main-cable span-cable crane according to claim 1, which is characterized in that: the on-cable supporting and traveling system comprises two groups of traveling mechanisms, a traction mechanism, a connecting shaft box body (11) and a parallel connection structure (16), wherein the two groups of traveling mechanisms are arranged in parallel and fixedly connected with each other through the parallel connection structure (16), and the upper ends of the two groups of traveling mechanisms are hinged with the connecting shaft box body (11) through a transverse pin shaft (19); the traction mechanism is arranged on the flat coupling mechanism (16).
3. The parallel four-main-cable span-cable crane according to claim 2, which is characterized in that: the traction mechanism comprises a traction steel strand jack (17), one end of the traction steel strand jack (17) is fixed on the parallel connection structure (16), and the other end of the traction steel strand jack is connected with a walking reaction frame (23) arranged on the two main cables through a walking fixing anchor (22) to provide reaction support during walking.
4. The parallel four-main-cable span-cable crane according to claim 2, which is characterized in that: the travelling mechanism consists of a travelling mechanism box body (13), four travelling wheel groups and three hoop bodies (15); the four travelling wheel groups are longitudinally arranged in the travelling mechanism box body (13); the three hoop bodies (15) are longitudinally arranged at the bottom of the travelling mechanism box body (13), and each hoop body is correspondingly arranged between two adjacent four travelling wheel sets.
5. The parallel four-main-cable span-cable crane according to claim 4, which is characterized in that: each walking wheel set consists of a walking roller (14) and a load transfer oil cylinder (12); four walking rollers (14) are all located in the walking mechanism box body (13), each walking roller (14) is connected with one load transfer oil cylinder (12) through a pin shaft (20), and the load transfer oil cylinders (12) are fixedly connected above the walking mechanism box body (13).
6. The parallel four-main-cable span-cable crane according to claim 5, which is characterized in that: the load transfer oil cylinder (12) is connected with the traveling mechanism box body (13) through a flange.
7. The parallel four-main-cable span-cable crane according to claim 1, which is characterized in that: the hoisting system comprises a bearing structure (4), two sets of main jack hoisting systems and a shoulder pole beam (7); the bearing structure (4) is of a phi-shaped box structure and is hinged with the connecting shaft box body (11) through a longitudinal pin shaft (21); the two sets of main jack lifting systems are symmetrically arranged on the bearing structure (4), and each main jack lifting system comprises a main lifting jack (3), a steel strand wire rewinding device (2) and a steel strand wire guide frame (1); the main lifting jack (3) is fixed on the bearing structure (4), the steel strand wire rewinding device (2) is positioned on the inner side of the main lifting jack (3), the steel strand guide frame (1) is arranged above the steel strand wire rewinding device (2), and the steel strands (5) in the steel strand wire rewinding device (2) extend out of the lower portion of the main lifting jack (3) through the steel strand guide frame (1); the steel strands (5) of the two main jack lifting systems respectively penetrate through the two end parts of the bearing structure (4) to be connected with the two ends of the carrying pole beam (7).
8. The parallel four-main-cable span-cable crane according to claim 1, which is characterized in that: the main truss (8) is a rectangular structure formed by combining a plurality of truss sections, all the truss sections are connected through pin shafts, the ends of the truss are connected with the bearing structures (4) at the ends through flanges, and all the truss sections (8) are connected through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120594825.6U CN214780358U (en) | 2021-03-24 | 2021-03-24 | Parallel four-main-cable cross-cable crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120594825.6U CN214780358U (en) | 2021-03-24 | 2021-03-24 | Parallel four-main-cable cross-cable crane |
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| CN214780358U true CN214780358U (en) | 2021-11-19 |
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| CN202120594825.6U Active CN214780358U (en) | 2021-03-24 | 2021-03-24 | Parallel four-main-cable cross-cable crane |
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2021
- 2021-03-24 CN CN202120594825.6U patent/CN214780358U/en active Active
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